Chosen Solution
I have gsm iphone5. I was wondering, by replacing gsm antenna with cdma antenna, Will i be able to use cdma sim ??
The case is the antennas! You would need to replace the case to get the other antenna configuration. You would also need to switch out the logic board. By the time you did all of this you could have bought a used one for less!
If you have a 3G only iPhone 5 you won’t be able to use a CDMA network; no matter what antenna you might use it will be missing the chip that can read and interpret the signals properly, sorry.
